A magnetron heat treatment method

Abstract

The present invention discloses a magnetron heat treatment method, comprising: assembling, fixing and sealing the magnetron; assembling and fixing the magnetron on a work surface so that the exhaust pipe of the magnetron is connected to a vacuum system; connecting the electrodes of the magnetron and connecting a movable electrode fixture to the lead terminal of the magnetron; setting the operating process parameters of the equipment, starting the equipment, and allowing the magnetron to perform a process treatment for a predetermined time in a corresponding process environment; and performing a cutting operation on the exhaust pipe after the magnetron has completed the process treatment for the predetermined time, cutting the exhaust pipe of the magnetron and sealing the anode end of the magnetron through the exhaust pipe. The present invention can simulate the actual operating environment to perform an electric heating treatment on the magnetron, so that hidden defects in defective products are stimulated, and can be more conveniently and accurately detected in subsequent inspection processes, so as to achieve the purpose of scrapping defective products hidden in the previous process, thereby preventing the defective products from occupying too many process resources and ensuring the product quality of the magnetron.

Description

Technical Field

[0001] The invention relates to the technical field of magnetron production technology, in particular to a magnetron heat treatment method. Background Art

[0002] Microwave ovens have become a common appliance in our daily lives, and the technology behind them has matured over the years. In particular, with the improvement of living standards in recent years, demand for microwave ovens has continued to grow, spurring microwave oven manufacturers to implement technological reforms to increase production capacity. As a core component of microwave ovens, the efficiency and quality of the magnetron's production are paramount, directly impacting both production capacity and quality. Magnetrons are vacuum components, and the production process includes heat treatment, vacuum evacuation, and sealing to ensure a high vacuum level within the magnetron. The heat treatment process simulates actual operating conditions during the magnetron production phase, exposing hidden defects in defective products. This allows for more accurate and convenient detection in subsequent inspection steps, enabling the scrapping of previously hidden defects, thereby preventing unnecessarily high processing resources from being consumed by defective products and ensuring product quality. Designing a magnetron heat treatment process to achieve safe and efficient production is crucial for magnetron manufacturers. Summary of the Invention

[0003] The present invention aims to solve the above problems and provides a heat treatment method for a magnetron. The technical solution of the present invention is as follows:

[0004] A magnetron heat treatment method comprises the following steps:

[0005] S1, assembly, fixation and sealing connection of magnetron;

[0006] The process includes assembling the magnetron onto a work surface and fixing it, connecting the exhaust pipe of the magnetron to the vacuum system, and ensuring a sealed connection between the two.

[0007] S2, electrode connection of magnetron;

[0008] After the magnetron is fixed on the workbench, connect the movable electrode fixture to the lead terminal of the magnetron to ensure that the magnetron can be powered on during operation;

[0009] S3, setting the operating process parameters of the equipment, starting the equipment, and making the magnetron perform the process for a predetermined time in the corresponding process environment;

[0010] S4, after the magnetron has completed the process for a predetermined period of time, the exhaust pipe is cut off and the anode end of the magnetron is sealed through the exhaust pipe.

[0011] As a further illustration of the present invention, the process of the predetermined duration in step S3 includes:

[0012] S301, the equipment performs vacuum treatment on the interior of the magnetron;

[0013] S302: The device powers on the magnetron.

[0014] Furthermore, in the process of powering on the magnetron in step S302 , the process is performed while maintaining a vacuum state inside the magnetron.

[0015] Furthermore, during the process of the predetermined duration, the electrode heat preservation cover is used to reduce the loss of heat generated by the magnetron, thereby forming a heat treatment process for the magnetron.

[0016] Furthermore, the predetermined time duration in step S3 is specifically set according to the model of the magnetron.

[0017] Furthermore, the cutting operation in step S4 is achieved by a cutting knife performing a squeezing operation.

[0018] Furthermore, the cutting operation in step S4 is performed while maintaining the vacuum state inside the magnetron.

[0019] Beneficial effects of the present invention:

[0020] The present invention arranges several rows of fixtures on a stepped work surface to simultaneously process multiple rows of magnetron products, thereby improving the efficiency of process processing. The fixtures are sequentially arranged on a work surface that increases in height step by step, which is beneficial for operators to distinguish the arrangement positions of each row of products, thereby improving the accuracy of operation and the safety of equipment operation; the present invention can simulate the actual operating environment to perform electrical heating treatment on the magnetron, so that hidden defects in defective products are stimulated, which can be detected more conveniently and accurately for subsequent inspection processes, so as to achieve the purpose of scrapping defective defective products hidden in the previous process, thereby avoiding defective products occupying too many process resources and ensuring the product quality of the magnetron. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Flow chart of the method of the present invention;

[0022] Figure 2 It is a structural diagram of the device of the present invention;

[0023] Figure 3 It is a structural diagram of the cutting knife of the present invention.

[0024] Figure numerals: cutting blade body 1, driving tube 2, fixed tool 3, movable tool 4, magnetron 5, exhaust pipe 6, U-shaped positioning plate 7, connecting flange 8, tooling hole 901, positioning fixture 902, sealing fixture 903, first cover body 10, second cover body 11, electrode contact 12, ceramic body 13, sliding rod 14, winch 15, vacuum system 16. DETAILED DESCRIPTION

[0025] Example:

[0026] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0028] like Figure 1 As shown, the process method of the present invention is targeted at magnetron products. Specifically, it processes semi-finished magnetrons that have been welded but have not yet undergone internal vacuuming and sealing. The interior of the welded magnetron is only connected to the external space via an exhaust pipe at one end. At this point, the electrical components within the magnetron are still in direct contact with the air. Therefore, direct electrothermal treatment of the magnetron to detect hidden defects is not possible. Otherwise, oxidation reactions within the magnetron components could easily lead to the magnetron being scrapped. Therefore, specialized equipment and processes are required for electrothermal treatment of magnetron products.

[0029] Specifically, the magnetron is composed of a cathode assembly, an anode cylinder assembly, and an exhaust pipe assembly connected in sequence. When the process of the present invention is carried out, the cathode assembly, the anode cylinder assembly, and the exhaust pipe assembly have been welded together, that is, the cathode end of the anode cylinder has been sealed by the cathode assembly. In this case, the interior of the magnetron can only be vacuumed through the exhaust pipe at the anode end of the anode cylinder that has not yet been sealed. As such, the magnetron heat treatment method of the present invention is mainly a method for performing electric heat treatment on the magnetron with this structural feature, and specifically includes the following steps:

[0030] S1, assembly, fixation and sealing connection of magnetron;

[0031] Specifically, the magnetron is assembled on the workbench and fixed, the exhaust pipe of the magnetron is connected to the vacuum system 16, and the sealing connection between the two is ensured to ensure that the inside of the magnetron can be vacuumed when the system is running.

[0032] S2, electrode connection of magnetron;

[0033] After the magnetron is fixed on the workbench, connect the movable electrode fixture to the lead terminal of the magnetron to ensure that the magnetron can be powered on during operation;

[0034] S3, setting the operating process parameters of the equipment, starting the equipment, and making the magnetron perform the process for a predetermined time in the corresponding process environment;

[0035] Specific process treatments include:

[0036] S301, the equipment performs vacuum treatment on the interior of the magnetron;

[0037] S302, the device powers on the magnetron;

[0038] S4, after the magnetron has completed the process for a predetermined period of time, the exhaust pipe is cut off and the anode end of the magnetron is sealed through the exhaust pipe.

[0039] In order to realize the magnetron heat treatment of the above-mentioned magnetron, as shown in the accompanying drawings, the process equipment includes a fixture, a vacuum system and an electrode insulation cover. The fixture is provided with a plurality of tooling holes 901 for placing the magnetron, and the lower ends of the tooling holes are connected to the vacuum system; the electrode insulation cover includes a first cover body 10 and a second cover body 11, and the first cover body and the second cover body are connected to each other to form a plurality of insulation chambers corresponding to the tooling holes, and the insulation chamber is used to cover the magnetron; the electrode insulation cover is also provided with an electrode contact 12, which is used to abut the lead terminal of the magnetron and provide process power to the magnetron.

[0040] The process of use is to put the exhaust pipe end of the magnetron into the tooling hole so that the main part of the magnetron stands on the outside of the tooling hole, and then use the first cover and the second cover to cover the outside of the main part of the magnetron. At this time, the main part of the magnetron is located in the insulation chamber and the lead of the magnetron is in contact with the electrode contact. After the fixture is clamped and sealed, the vacuum system is started to extract the air inside each magnetron, so that a quasi-vacuum state is formed inside the magnetron, and subsequent electric heat treatment can be carried out. When the magnetron is connected to the process power supply for electrical treatment, the electrode insulation cover also keeps most of the heat generated by the magnetron in the insulation chamber to perform heat treatment on the magnetron. After the electric heat treatment is completed, the electrode insulation cover is opened, and the exhaust pipe of the magnetron is cut and sealed by a special cutting equipment. That is, the magnetron exhaust station completes a process flow and enters the next round of work.

[0041] In this embodiment, the fixtures are arranged in rows, that is, the work surface of the magnetron exhaust table has several rows of fixtures, so that multiple rows of magnetron products can be processed simultaneously, improving the efficiency of the process. Preferably, the fixtures are arranged in sequence on a work surface with gradually increasing height, which helps the operator distinguish the arrangement position of each row of products, improves the accuracy of the operation and the safety of the equipment operation. To better achieve the positioning and sealing effect of the above-mentioned magnetron, the fixture includes a positioning fixture 902 and a sealing fixture 903 arranged below the positioning fixture. During assembly, the magnetron is placed in the positioning fixture 902 and the sealing fixture 903 is in the open state. The exhaust pipe of the magnetron extends into the sealing fixture 903. During the process, the sealing fixture 903 is closed and tightly sleeved on the outside of the exhaust pipe to seal it. It is connected to the vacuum system 16 through the fixture hole 901. The vacuum system 16 extracts the air inside the magnetron to ensure the vacuum effect inside the magnetron during the process.

[0042] As shown in the accompanying drawings, the electrode contacts of this embodiment are arranged on the ceramic body 13 on the upper part of the first cover and the second cover. The ceramic body has good insulation and high temperature resistance, and can well meet the high temperature and insulation requirements during operation of the equipment. In a preferred embodiment, an electrode spring is arranged between the electrode contact and the ceramic body. Specifically, the electrode contact forms a retractable mounting structure between the electrode spring and the ceramic body. Since the first cover and the second cover of this embodiment are mutually symmetrical structures, they are fixed by clamping toward each other during operation, that is, the electrode contacts are abutted against the leads of the magnetron by mutual compression. The arrangement of the above-mentioned electrode spring can effectively ensure good abutment between the electrode contacts and the leads, effectively avoiding poor contact between the electrode contacts and the leads due to misalignment or deformation of the first cover and the second cover, thereby ensuring the safety of the operation of the magnetron exhaust station. Referring to the accompanying drawings, the first cover and the second cover of this embodiment are fixed together by a number of snap-fit ​​structures.

[0043] As mentioned above, cutting the exhaust pipe of the magnetron requires the use of special cutting equipment. The magnetron exhaust table in this embodiment is also provided with a cutting knife movably connected thereto. During the cutting process, the vacuum state inside the magnetron is maintained by the above-mentioned vacuum pumping system for cutting. Referring to the accompanying drawings, the cutting knife includes a cutting knife body 1, a drive tube 2, a cutting tool, and a control switch; the cutting knife body is provided with a U-shaped blade for mounting the cutting tool, and the cutting tool includes a fixed blade 3 arranged on one side of the U-shaped blade and a movable blade 4 arranged on the other side of the U-shaped blade, and the movable blade is movably arranged relative to the fixed blade; the cutting knife body is connected to the drive tube and the movable blade is driven by the drive tube to open or close; the control switch is used to control the start and close of the drive tube.

[0044] As shown in the accompanying drawings, during the cutting operation of the magnetron exhaust pipe cutting knife of the present invention, the U-shaped blade of the cutting knife body is placed outside the exhaust pipe 6 of the magnetron 5, so that the exhaust pipe is located between the fixed blade and the movable blade. The driving tube is then activated by the control switch, pushing the movable blade to move and close toward the fixed blade, squeezing the hollow exhaust pipe, causing it to flatten and eventually break. The broken ends of the exhaust pipe adhere to each other, thereby achieving a seal inside the magnetron for subsequent inspection and processing. After cutting is completed, the control switch automatically disconnects the driving tube, causing the movable blade to open and reset, restoring the open state of the U-shaped blade, and allowing the next round of cutting operation to proceed.

[0045] As shown in the accompanying drawings, the end of the movable blade in this embodiment is designed to be arc-shaped, effectively severing the exhaust pipe and forming a flat section at the fractured end to ensure the exhaust pipe's tightness. In a preferred embodiment, the end of the fixed blade is also designed to have a corresponding arc shape to that of the movable blade. During the exhaust pipe cutting process, the relative movement of the fixed and movable blades exerts symmetrical and uniform forces on the exhaust pipe, improving cutting quality and ensuring the qualified rate of the finished product.

[0046] In this embodiment, the fixed cutter is removably mounted on the U-shaped blade. Specifically, a fixed cutter mounting slot is defined on one side of the U-shaped blade, and the fixed cutter is secured to the slot via a set screw. After installation, the fixed cutter partially protrudes into the U-shaped blade. This removable mounting structure of the fixed cutter not only allows for replacement of the cutter when it becomes deformed or damaged, but more importantly, facilitates the production and processing of the cutter, thereby improving the precision of the fit between the fixed cutter and the movable cutter, effectively enhancing the cutting accuracy and quality of the exhaust pipe. Similarly, the movable cutter of this embodiment is also removably mounted on the U-shaped blade. Specifically, a movable cutter mounting slot is defined on the other side of the U-shaped blade. The movable cutter is slidably mounted within the slot and fixedly connected to a piston body mounted within the cutting blade body via a set screw. A drive tube drives the piston body to drive the movement of the movable cutter, thereby achieving the same technical effect as described above.

[0047] As described above, the magnetron exhaust pipe cutting knife of the present invention is aimed at cutting the exhaust pipe in the shape of a hollow circular cylinder. In order to improve the cutting accuracy of the exhaust pipe, a U-shaped positioning plate 7 is provided on the side of the U-shaped blade perpendicular to the cutting tool. The arc curve of the U-shaped positioning plate is adapted to the arc curve of the outer surface of the exhaust pipe to be cut. During the cutting process, the U-shaped positioning plate forms a certain positioning and limiting effect on the exhaust pipe, thereby assisting the cutting tool to better cut and improve the cutting quality and accuracy.

[0048] In this embodiment, the drive tube is a high-pressure hydraulic tube, which uses hydraulic drive to promote the movement of the piston body and the movable tool. It has smooth drive and strong driving force, which can better meet the drive requirements of the cutting tool of this embodiment. The high-pressure hydraulic tube is connected to the cutting tool body through a connecting flange 8 to transmit the hydraulic power of the hydraulic system to the cutting tool body to drive the reciprocating motion of the piston body and the movable tool. In a preferred embodiment, the control switch is a foot switch, which is intended to facilitate the cutting operator to perform the exhaust pipe cutting operation by hand while controlling the opening and closing operation of the magnetron exhaust pipe cutting tool by foot control, thereby improving the efficiency of the cutting operation.

[0049] As a preferred embodiment, the magnetron exhaust table frame of this embodiment is equipped with a sliding rod 14, on which a capstan 15 is slidably mounted. The capstan is connected to the shears via a cable that can be pulled from the capstan. When the shears are not in use, they can be hung above the magnetron exhaust table using the capstan and cable for easy access by the operator. During use, the position and direction of the shears can be adjusted by sliding the capstan and pulling the cable, without affecting their usability, thus meeting user requirements.

[0050] The above description is merely an explanation of the preferred embodiments of the present invention and should not be construed as limiting the claims. The present invention is not limited to the above embodiments, and variations in the specific structure are permitted. In short, all variations made within the scope of the independent claims of the present invention are also within the scope of protection of the present invention.

Claims

1. A magnetron heat treatment method, characterized in that: The steps include: S1, assembly, fixation and sealing connection of magnetron; This includes assembling the magnetron onto the work surface and fixing it, connecting the exhaust pipe of the magnetron to the vacuum system, and ensuring a sealed connection between the two; S2, electrode connection of magnetron; After the magnetron is fixed on the workbench, connect the movable electrode fixture to the lead terminal of the magnetron to ensure that the magnetron can be powered on during operation; S3, setting the operating process parameters of the equipment, starting the equipment, and making the magnetron perform the process for a predetermined time in the corresponding process environment; S4, after the magnetron has completed the process for a predetermined period of time, the exhaust pipe is cut off and the anode end of the magnetron is sealed through the exhaust pipe; The equipment includes a fixture, a vacuum system, and an electrode heat preservation cover. The fixture is provided with a plurality of tooling holes for placing magnetrons, and the lower ends of the tooling holes are connected to the vacuum system. The electrode heat preservation cover includes a first cover body and a second cover body. The first cover body and the second cover body are connected to each other to form a plurality of heat preservation cavities corresponding to the tooling holes, and the heat preservation cavities are used to cover the magnetrons. The electrode heat preservation cover is also provided with electrode contacts for abutting the lead terminals of the magnetron and providing process power to the magnetron. The fixture is sequentially arranged on a work surface with gradually increasing heights. The magnetrons are placed in a row on the corresponding fixtures on the workbench, and the exhaust pipe ends of the magnetrons are placed in the fixture holes so that the main parts of the magnetrons stand outside the fixture holes. The first cover body and the second cover body are sleeved on the outside of the main parts of the magnetrons. The main parts of the magnetrons are located in the heat preservation cavity and the leads of the magnetrons are in contact with the electrode contacts. After the fixtures are clamped and sealed, the vacuum system is started to extract the air inside each magnetron, so that a quasi-vacuum state is formed inside the magnetrons. After the magnetrons are connected to the process power supply and the electrical treatment is completed, the electrode heat preservation cover is opened and the exhaust pipes of the magnetrons are cut and sealed.

2. The magnetron heat treatment method according to claim 1, wherein: The process of the predetermined duration in step S3 includes: S301, the equipment performs vacuum treatment on the interior of the magnetron; S302: The device powers on the magnetron.

3. The magnetron heat treatment method according to claim 2, wherein: In the process of powering on the magnetron in step S302 , the device maintains a vacuum state inside the magnetron.

4. The magnetron heat treatment method according to claim 3, wherein: During the process of the predetermined duration, the electrode heat preservation cover is used to reduce the loss of heat generated by the magnetron, thereby forming a heat treatment process for the magnetron.

5. The magnetron heat treatment method according to claim 3, wherein: The predetermined time duration in step S3 is specifically set according to the model of the magnetron.

6. The magnetron heat treatment method according to claim 3, wherein: The cutting operation in step S4 is achieved by the cutting knife performing a squeezing operation.

7. The magnetron heat treatment method according to claim 3, wherein: The cutting operation in step S4 is performed while maintaining the vacuum state inside the magnetron.

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